Constructed using BONELIGHT® ACM material. This aluminum composite material is made using (2) sheets of .025 aluminum bonded to a thermoplastic core resulting in durable, lightweight, weather-resistant material ensuring long-term work-zone performance and durability. With the weight a full 40% less than .080 aluminum, these signs also help reduce worker fatigue. Available in 18" and 24" sizes and various reflective and non-reflective faces. Handle extends quickly to 84" for use and easily retracts for quick storage. ACM is an excellent alternative for lightweight Type III signing. NCHRP350 approved and ISO9001-2000 - ISO14001 certified.